Citation: JING Xu-liang, WANG Zhi-qing, YU Zhong-liang, FANG Yi-tian. Multi-circulated gasification reactivity of coal char and its microstructure analysis[J]. Journal of Fuel Chemistry and Technology, ;2013, 41(8): 917-921. shu

Multi-circulated gasification reactivity of coal char and its microstructure analysis

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1. State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China;

Corresponding author: FANG Yi-tian,
Received Date: 29 April 2013
Available Online: 17 June 2013
Fund Project: 国家自然科学基金(21106173) (21106173) 山西省自然科学基金(2013021007-2) (2013021007-2) 中国科学院战略性先导科技专项(XDA07050100) (XDA07050100) 中国科学院山西煤炭化学研究所青年人才基金(2011SQNRC). (2011SQNRC)

To investigate the variation in gasification reactivity and microstructure of char from the multi-circulation fluidized bed gasifier, 3 chars from different rank coals were gasified in a simulated multi-circulated reactor (rapid heating-up fixed bed). The carbon conversion was calculated from the weight of residues, and the structure was analyzed by pore and XRD analyzer. The results show that with the increase of cycle time, the carbon conversion of low rank HLH lignite char increases while that of SM bituminous and JC anthracite chars decrease. The evolutions of BET surface area and micropore area have a peak value with the circulate time. The variation of graphitization is similar with the carbon conversion, which can be considered as the key factor to determine the carbon conversion.
- fluidized bed gasifier,
- surface area,
- carbon crystalline structure,
- gasification reactivity
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